|
| 1 | +# Paper Muncher Python Bindings |
| 2 | + |
| 3 | +## Usage examples |
| 4 | + |
| 5 | +### Functional Usage |
| 6 | + |
| 7 | +Paper Muncher includes both synchronous and asynchronous functional APIs. |
| 8 | + |
| 9 | +```python |
| 10 | +from paper_muncher.synchronous import render |
| 11 | + |
| 12 | + |
| 13 | +html = """ |
| 14 | +<h1>Hello, Paper Muncher!</h1> |
| 15 | +<p>This is a simple example of using Paper Muncher in a synchronous context.</p> |
| 16 | +""" |
| 17 | + |
| 18 | + |
| 19 | +def main(): |
| 20 | + pdf_bytes = render(html, mode="print") |
| 21 | + with open("output.pdf", "wb") as f: |
| 22 | + f.write(pdf_bytes) |
| 23 | +``` |
| 24 | + |
| 25 | +**N.B.** The synchronous API is based on a per-OS integration for IO timeouts. |
| 26 | + |
| 27 | +1. For POSIX systems, it relies on selectors. |
| 28 | +2. For Windows with Python 3.12+, it puts the file in non-blocking mode. |
| 29 | +3. For Windows with Python < 3.12, it falls back to a potentially blocking read without timeout. |
| 30 | + |
| 31 | +```python |
| 32 | +from paper_muncher.asynchronous import render |
| 33 | + |
| 34 | + |
| 35 | +html = """ |
| 36 | +<h1>Hello, Paper Muncher!</h1> |
| 37 | +<p>This is a simple example of using Paper Muncher in an asynchronous context.</p> |
| 38 | +""" |
| 39 | + |
| 40 | + |
| 41 | +async def main(): |
| 42 | + pdf_bytes = await render(html, mode="print") |
| 43 | + with open("output_async.pdf", "wb") as f: |
| 44 | + f.write(pdf_bytes) |
| 45 | +``` |
| 46 | + |
| 47 | +In addition to that it also includes a context based approach to automatically |
| 48 | +handle synchronous and asynchronous code execution. |
| 49 | + |
| 50 | +```python |
| 51 | +from paper_muncher import render |
| 52 | + |
| 53 | + |
| 54 | +html = """ |
| 55 | +<h1>Hello, Paper Muncher!</h1> |
| 56 | +<p>This is a simple example of using Paper Muncher in an auto context.</p> |
| 57 | +""" |
| 58 | + |
| 59 | +async def main_async(): |
| 60 | + pdf_bytes = await render(html, mode="print") |
| 61 | + with open("output_async.pdf", "wb") as f: |
| 62 | + f.write(pdf_bytes) |
| 63 | + |
| 64 | + print("PDF generated and saved as output_async.pdf") |
| 65 | + |
| 66 | + |
| 67 | +def main_sync(): |
| 68 | + pdf_bytes = render(html, mode="print") |
| 69 | + with open("output_sync.pdf", "wb") as f: |
| 70 | + f.write(pdf_bytes) |
| 71 | + |
| 72 | + print("PDF generated and saved as output_sync.pdf") |
| 73 | +``` |
| 74 | + |
| 75 | +### Context Manager Usage |
| 76 | + |
| 77 | +Paper Muncher includes both synchronous and asynchronous context manager APIs. |
| 78 | + |
| 79 | +```python |
| 80 | +from paper_muncher.synchronous import rendered |
| 81 | + |
| 82 | + |
| 83 | +html = """ |
| 84 | +<h1>Hello, Paper Muncher!</h1> |
| 85 | +<p>This is a simple example of using Paper Muncher in a synchronous context.</p> |
| 86 | +""" |
| 87 | + |
| 88 | + |
| 89 | +def main(): |
| 90 | + with rendered(html, mode="print") as (pdf_io_stream, std_err): |
| 91 | + pdf = pdf_io_stream.read() |
| 92 | + |
| 93 | + with open("output_sync.pdf", "wb") as f: |
| 94 | +``` |
| 95 | + |
| 96 | +**N.B.** The synchronous API is based on a per-OS integration for IO timeouts. |
| 97 | + |
| 98 | +1. For POSIX systems, it relies on selectors. |
| 99 | +2. For Windows with Python 3.12+, it puts the file in non-blocking mode. |
| 100 | +3. For Windows with Python < 3.12, it falls back to a potentially blocking read without timeout. |
| 101 | + |
| 102 | +```python |
| 103 | +from paper_muncher.asynchronous import rendered |
| 104 | + |
| 105 | + |
| 106 | +html = """ |
| 107 | +<h1>Hello, Paper Muncher!</h1> |
| 108 | +<p>This is a simple example of using Paper Muncher in an asynchronous context.</p> |
| 109 | +""" |
| 110 | + |
| 111 | + |
| 112 | +async def main(): |
| 113 | + async with rendered(html, mode="print") as (pdf_stream_reader, std_err): |
| 114 | + pdf = await pdf_stream_reader.read() |
| 115 | + |
| 116 | + with open("output_async.pdf", "wb") as f: |
| 117 | + f.write(pdf) |
| 118 | +``` |
| 119 | + |
| 120 | +In addition to that it also includes a context based approach to automatically |
| 121 | +handle synchronous and asynchronous code execution. |
| 122 | + |
| 123 | +```python |
| 124 | +from paper_muncher import rendered |
| 125 | + |
| 126 | + |
| 127 | +html = """ |
| 128 | +<h1>Hello, Paper Muncher!</h1> |
| 129 | +<p>This is a simple example of using Paper Muncher in an auto context.</p> |
| 130 | +""" |
| 131 | + |
| 132 | +def main_sync(): |
| 133 | + with rendered(html, mode="print") as (pdf_io_stream, std_err): |
| 134 | + pdf = pdf_io_stream.read() |
| 135 | + |
| 136 | + with open("output_sync.pdf", "wb") as f: |
| 137 | + f.write(pdf) |
| 138 | + |
| 139 | + print("PDF generated and saved as output_sync.pdf") |
| 140 | + |
| 141 | + |
| 142 | +async def main_async(): |
| 143 | + async with rendered(html, mode="print") as (pdf_stream_reader, std_err): |
| 144 | + pdf = await pdf_stream_reader.read() |
| 145 | + |
| 146 | + with open("output_async.pdf", "wb") as f: |
| 147 | + f.write(pdf) |
| 148 | + |
| 149 | + print("PDF generated and saved as output_async.pdf") |
| 150 | +``` |
| 151 | + |
| 152 | +Paper Muncher comes with pre-made integration with some |
| 153 | +of the most popular frameworks as well! |
| 154 | + |
| 155 | +* Flask |
| 156 | +* Quart |
| 157 | +* Fast API |
| 158 | +* Django |
| 159 | + |
| 160 | +Your favorite framework is not in the list? |
| 161 | +No worries! Some general implementation are also |
| 162 | +present! |
| 163 | + |
| 164 | +* agnostic WSGI integration |
| 165 | +* agnostic ASGI integration |
| 166 | + |
| 167 | +### Flask |
| 168 | + |
| 169 | +```python |
| 170 | +from paper_muncher.frameworks.flask import register_paper_muncher |
| 171 | +from flask import Flask, Response |
| 172 | + |
| 173 | +app = Flask(__name__) |
| 174 | +register_paper_muncher(app) |
| 175 | + |
| 176 | + |
| 177 | +@app.route("/") |
| 178 | +def index(): |
| 179 | + html_content = "<h1>Hello, Paper Muncher with Flask!</h1>" |
| 180 | + pdf_bytes = app.run_paper_muncher(html_content, mode="print") |
| 181 | + return Response(pdf_bytes, mimetype="application/pdf") |
| 182 | +``` |
| 183 | + |
| 184 | +### Quart |
| 185 | + |
| 186 | +```python |
| 187 | +from paper_muncher.frameworks.quart import register_paper_muncher |
| 188 | +from quart import Quart, Response |
| 189 | + |
| 190 | +app = Quart(__name__) |
| 191 | +register_paper_muncher(app) |
| 192 | + |
| 193 | + |
| 194 | +@app.route("/") |
| 195 | +async def index(): |
| 196 | + html_content = "<h1>Hello, Paper Muncher with Quart!</h1>" |
| 197 | + pdf_bytes = await app.run_paper_muncher(html_content, mode="print") |
| 198 | + return Response(pdf_bytes, mimetype="application/pdf") |
| 199 | +``` |
| 200 | + |
| 201 | +### FastAPI |
| 202 | + |
| 203 | +```python |
| 204 | +from fastapi import FastAPI, Response |
| 205 | +from paper_muncher.frameworks.fastapi import register_paper_muncher |
| 206 | + |
| 207 | +app = FastAPI() |
| 208 | +register_paper_muncher(app) |
| 209 | + |
| 210 | + |
| 211 | +@app.get("/") |
| 212 | +async def index(): |
| 213 | + html_content = "<h1>Hello, Paper Muncher with FastAPI!</h1>" |
| 214 | + pdf_bytes = await app.run_paper_muncher(html_content) |
| 215 | + return Response(content=pdf_bytes, media_type="application/pdf") |
| 216 | +``` |
| 217 | + |
| 218 | +### Django |
| 219 | + |
| 220 | +WSGI. |
| 221 | + |
| 222 | +```python |
| 223 | +import os |
| 224 | +from wsgiref.simple_server import make_server |
| 225 | + |
| 226 | +from django.conf import settings |
| 227 | +from django.core.wsgi import get_wsgi_application |
| 228 | +from django.http import HttpResponse |
| 229 | +from django.urls import path |
| 230 | +from django.core.management import execute_from_command_line |
| 231 | + |
| 232 | +from paper_muncher.frameworks.django_wsgi import register_paper_muncher |
| 233 | + |
| 234 | + |
| 235 | +BASE_DIR = os.path.dirname(__file__) |
| 236 | +settings.configure( |
| 237 | + DEBUG=True, |
| 238 | + ROOT_URLCONF=__name__, |
| 239 | + SECRET_KEY="dummy", |
| 240 | + ALLOWED_HOSTS=["*"], |
| 241 | + MIDDLEWARE=[], |
| 242 | +) |
| 243 | + |
| 244 | + |
| 245 | +def index(request): |
| 246 | + html = "<h1>Hello from Django WSGI!</h1>" |
| 247 | + pdf = application.run_paper_muncher(html) |
| 248 | + return HttpResponse(pdf, content_type="application/pdf") |
| 249 | + |
| 250 | + |
| 251 | +urlpatterns = [ |
| 252 | + path("", index), |
| 253 | +] |
| 254 | + |
| 255 | +os.environ.setdefault("DJANGO_SETTINGS_MODULE", "__main__") |
| 256 | + |
| 257 | +django_wsgi_app = get_wsgi_application() |
| 258 | +application = register_paper_muncher(django_wsgi_app) |
| 259 | +``` |
| 260 | + |
| 261 | +ASGI. |
| 262 | + |
| 263 | +```python |
| 264 | +import os |
| 265 | +import asyncio |
| 266 | + |
| 267 | +from django.conf import settings |
| 268 | +from django.core.asgi import get_asgi_application |
| 269 | +from django.http import HttpResponse |
| 270 | +from django.urls import path |
| 271 | +from django.core.management import execute_from_command_line |
| 272 | + |
| 273 | +from asgiref.sync import async_to_sync |
| 274 | +from hypercorn.config import Config |
| 275 | +from hypercorn.asyncio import serve |
| 276 | + |
| 277 | +from paper_muncher.frameworks.django_asgi import register_paper_muncher # Your patch |
| 278 | + |
| 279 | + |
| 280 | +BASE_DIR = os.path.dirname(__file__) |
| 281 | +settings.configure( |
| 282 | + DEBUG=True, |
| 283 | + ROOT_URLCONF=__name__, |
| 284 | + SECRET_KEY="dummy", |
| 285 | + ALLOWED_HOSTS=["*"], |
| 286 | + MIDDLEWARE=[], |
| 287 | +) |
| 288 | + |
| 289 | + |
| 290 | +def index(request): |
| 291 | + html = "<h1>Hello from Django!</h1>" |
| 292 | + pdf = async_to_sync(application.run_paper_muncher)(html) |
| 293 | + return HttpResponse(pdf, content_type="application/pdf") |
| 294 | + |
| 295 | + |
| 296 | +urlpatterns = [ |
| 297 | + path("", index), |
| 298 | +] |
| 299 | + |
| 300 | +os.environ.setdefault("DJANGO_SETTINGS_MODULE", "__main__") |
| 301 | +django_asgi_app = get_asgi_application() |
| 302 | +application = register_paper_muncher(django_asgi_app) |
| 303 | +``` |
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